<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <style>
    div{
      width: 300px;
      background: red;
    }
    span{
      display: inline-block;
      width: 200px;
      height: 200px;
      background: green;
    }
  </style>
</head>
<body>
<div>
  块标签
</div>
<a>我是a标签</a>
<span>行标签</span>
<a>我是a标签</a>
<div>块标签2</div>

</body>
</html>
